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5cmx2=10cm
Pp=5cmx5cm=25cm²
Pb=5cmx10cm/2x4=100cm²
Pc=25cm²+100cm²=125cm²
V=5cmx5cmx10cm=250cm³
Liczę na naj .
a+a+a+a+a+2+a+2+a+2+a+2+a+a+a+a=60
12a+4=60
12a=56/:12
a=4½
H=6½
a=4½
V=Pp*H
V=4,5*4,5*6,5
V=131,625cm²
2x-długość wysokości 8x+8x=60cm
16x=60
x=3,75
2x=7,5
pc= 3,75*3,75=14
14*2=28
7,5*7,5=56,25
56,25*4=225cm3
225+28=253
V=7,5*3,75*3,75=105,5